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  • 1
    Electronic Resource
    Electronic Resource
    Corrosion Depth Profiles by Rutherford Backscattering Spectrometry and Synchrotron X-Ray Reflrectometry (1997)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 248-249 (May 1997), p. 365-368 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/02/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.248-249.365.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Pure nuclear Bragg reflection of a periodic 56Fe/57Fe multilayer (1999)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 85 (1999), S. 1-7 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Grazing incidence nuclear multilayer diffraction of synchrotron radiation from a periodic stack of alternating 56Fe and 57Fe layers was observed. Resonant layer fraction, substrate size, flatness, and surface roughness limits were optimized by previous simulations. The isotopic multilayer (ML) sample of float glass/57Fe(2.25 nm)/[56Fe(2.25 nm)/57Fe(2.25 nm)]×15/Al(9.0 nm) nominal composition was prepared by molecular beam epitaxy at room temperature. Purity structure and lateral homogenity of the isotopic ML film was characterized by magnetometry, Auger electron, Rutherford backscattering, and conversion electron Mössbauer spectroscopies. The isotopic ML structure was investigated by neutron and synchrotron Mössbauer reflectometry. Surface roughness of about 1 nm of the flat substrate (curvature radius 〉57 m) was measured by scanning tunneling microscopy and profilometry. A pure nuclear Bragg peak appeared in synchrotron Mössbauer reflectometry at the angle expected from neutron reflectometry while no electronic Bragg peak was found at the same position by x-ray reflectometry. The measured width of the Bragg peak is in accordance with theoretical expectations. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.369470
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  • 3
    Electronic Resource
    Electronic Resource
    Synchrotron Mössbauer reflectometry (2000)
    Springer
    Hyperfine interactions 126 (2000), S. 353-361 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Grazing incidence nuclear resonant scattering of synchrotron radiation can be applied to perform depth-selective phase analysis and to determine the isotopic and magnetic structure of thin films and multilayers. Principles and recent experiments of this new kind of reflectometry are briefly reviewed. Methodological aspects are discussed. Model calculations demonstrate how the orientations of the sublattice magnetisation in ferro- and antiferromagnetic multilayers affect time-integral and time-differential spectra. Experimental examples show the efficiency of the method in investigating finite-stacking, in-plane and out-of-plane anisotropy and spin-flop effects in magnetic multilayers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1012622712772
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  • 4
    Electronic Resource
    Electronic Resource
    Calculation of nuclear resonant scattering spectra of magnetic multilayers (1994)
    Springer
    Hyperfine interactions 92 (1994), S. 1083-1088 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report on calculations of the angle- and time-dependent photon reflectivity of multilayers using the technique of characteristic matrices. Spectra of56Fe/57Fe and Cr/Fe multilayers are calculated under various conditions. The parameters of the multilayers are optimized for suitable test samples of reflectometry measurements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02065737
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  • 5
    Electronic Resource
    Electronic Resource
    Layer magnetization canting in 57Fe/FeSi multilayer observed by synchrotron Mössbauer reflectometry (1998)
    Springer
    Hyperfine interactions 113 (1998), S. 295-301 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Synchrotron Mössbauer reflectometry and CEMS results on a [57Fe(2.55 nm)/FeSi\break(1.57 nm)]10 multilayer (ML) on a Zerodur substrate are reported. CEMS spectra are satisfactorily fitted by α‐Fe and an interface layer of random α‐(Fe, Si) alloy of 20% of the 57Fe layer thickness on both sides of the individual Fe layers. Kerr loops show a fully compensated AF magnetic layer structure. Prompt X‐ray reflectivity curves show the structural ML Bragg peak and Kiessig oscillations corresponding to a bilayer period and total film thickness of 4.12 and 41.2 nm, respectively. Grazing incidence nuclear resonant Θ–2Θ scans and time spectra (E = 14.413 keV, λ = 0.0860 nm) were recorded in different external magnetic fields (0 〈 Bext 〈 0.95 T) perpendicular to the scattering plane. The time integral delayed nuclear Θ–2Θ scans reveal the magnetic ML period doubling. With increasing transversal external magnetic field, the antiferromagnetic ML Bragg peak disappears due to Fe layer magnetization canting, the extent of which is calculated from the fit of the time spectra and the Θ–2Θ scans using an optical approach. In a weak external field the Fe layer magnetization directions are neither parallel with nor perpendicular to the external field. We suggest that the interlayer coupling in [Fe/FeSi]10 varies with the distance from the substrate and the ML consists of two magnetically distinct regions, being of ferromagnetic character near substrate and antiferromagnetic closer to the surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1011094513120
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  • 6
    Electronic Resource
    Electronic Resource
    Interlayer exchange coupling, crystalline and magnetic structure in Fe/CsCl–FeSi multilayers grown by molecular beam epitaxy (1999)
    Springer
    Hyperfine interactions 120-121 (1999), S. 39-48 
    Details
    ISSN: 1572-9540
    Keywords: magnetic films and multilayers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Crystalline and magnetic structure as well as the interlayer exchange coupling in MBE grown Fe/FeSi multilayers are investigated. From conversion electron Mössbauer spectroscopy and ion beam channeling measurements the spacer FeSi material is found to be stabilized in a crystalline metastable metallic FeSi phase with the CsCl structure. Strong non-oscillatory interlayer exchange coupling is identified with magnetometry and synchrotron Mössbauer reflectometry. From the fits of the time spectrum and the resonant ϕ—ϕ scans a model for the sublayer magnetization of the multilayer is deduced.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1017065710220
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  • 7
    Electronic Resource
    Electronic Resource
    EFFINO (2000)
    Springer
    Hyperfine interactions 125 (2000), S. 197-204 
    Details
    ISSN: 1572-9540
    Keywords: nuclear optics ; correlations ; energy domain ; time domain ; forward scattering ; grazing incidence ; inequivalent nuclear site ; cover layer ; substrate layer ; periodic multilayer ; simultaneous fit
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The program EFFINO (Environment For FItting Nuclear Optics) evaluates Mössbauer absorption and time spectra both in nuclear forward scattering and in grazing incidence reflection geometry. Time‐integral prompt and delayed angular scan spectra are also treated. The time spectra are calculated by Fourier transformation from frequency to time domain. The electric quadrupole and magnetic dipole fields at the nuclear sites are considered static at present. The specimen in both forward scattering and grazing incidence is assumed to be a multilayer, with individual thickness and interface roughness (the latter only for the grazing incidence case at present) and electronic index of refraction. Up to eight different layers plus eight repetition periods of those layers are treated. Each layer may contain zero to eight nuclear sites (zero in all layers being prompt X‐ray reflectivity), with their own effective thickness or (for grazing incidence) their own complex nuclear index of refraction. From the forward scattering amplitude, a differential 4 × 4 propagation matrix is constructed for each layer. Several experimental spectra of the same or different type(s) can be fitted simultaneously. Correlations between parameters of the same or of different spectra can be introduced.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1012637721433
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